They (or someone they hired) actually rewrote their whole app about a year ago, I remember seeing lots of people complaining about how much worse and buggier it

They (or someone they hired) actually rewrote their whole app about a year ago, I remember seeing lots of people complaining about how much worse and buggier it got after the rewrite. I have no idea if the back end was also replaced then or if the vulnerabilities were present in the previous version as well.